Viewpoint Invariance
One of the most defining factors of the Recognition-by-Components theory is that it enables us to recognize objects regardless of viewing angle, this is known as viewpoint invariance. It is proposed that the reason for this effect is the invariant edge properties of geons. The invariant edge properties are as follows:-
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- Curvature (various points of a curve)
- Parallel lines (two or more points which follow the same direction)
- Co-termination (the point at which two points meet and therefore cease to continue)
- Symmetry and asymmetry
- Co-linearity (points branching from a common line)
Our knowledge of these properties mean that when viewing an object or geon, we can perceive it from almost any angle. For example when viewing a brick we will be able to see horizontal sets of parallel lines and vertical ones, when considering where these points meet (co-termination) we are able to perceive the object.
Read more about this topic: Recognition-by-components Theory